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Finding the Fourth Proportional to 22,050.80, 30,430.52 and 21,053.68

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Solution

The fourth proportional to 22,050.80, 30,430.52 and 21,053.68 is: 29,054.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,050.80 : 30,430.52 = 21,053.68 : x
  2. Step 2: Convert to fraction form
    22,050.80/30,430.52 = 21,053.68/x
  3. Step 3: Cross multiply
    22,050.80x = 30,430.52 × 21,053.68
  4. Step 4: Simplify right side
    22,050.80x = 640,674,430.31
  5. Step 5: Solve for x
    x = 640,674,430.31/22,050.80
  6. Step 6: Final answer
    x = 29,054.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.